Bed device

ABSTRACT

A bed device includes: an operation section that receives an operation input; a controller that controls a movement of the bed in accordance with the operation input; a detector that detects a position of a patient on the bed; and, a limitation table that stores a limitation area set on the bed in association with a limitation content, wherein when the position of the patient detected by the detector is included in the limitation area, the limitation content is read out from the limitation table so as to control the controller in accordance with the limitation content. With this configuration, it is possible to provide a higher safety bed device which can not only notify the danger based on the bed movement but also limit the movement of the bed in accordance with the status of the patient or the bed device.

TECHNICAL FIELD

The present invention relates to a bed device.

BACKGROUND ART

The bed device is able to realize various kinds of operations such asback rise and knee rise in bed mode by operating the actuators connectedto the bottom part so as to change mode into a condition suitable forthe patient and change the shape of the bottom part in conformity withthe patient's posture.

Herein, for the bed device, there is a known function, which, inadvance, prohibits risky control against the patient (bed controlprohibiting function or the like). In use of the bed control prohibitingfunction, when a predetermined control has been prohibited in advance,if the person (operator) who operates the bed device performs thepredetermined control it is possible to avoid, for example a dangerousoperation that would cause the patient to fall from the bed.

There has been another known invention, by which the position of thepatient on the bed device is detected so as to give an alarm when thepatient stays in a dangerous position (e.g., see Patent Document 1).This configuration makes it possible to notify the operator when thepatient is staying at a hazardous position where the patient would fallfrom the bed device or be strongly caught into the bed.

PRIOR ART DOCUMENT Patent Document

Patent Document 1:

-   -   Japanese Patent Application Laid-open 2008-206869

SUMMARY OF THE INVENTION Problems to be Solved by the Invention

However, even if an alarm is raised when the patient is staying in thehazardous position (position with a high risk), the operator needs tomanually stop the operation and/or adjust the position of the patient.As a result, when operating the bed device the operator is demanded toalways pay attention to the patient and the bed device, which makesheavy burden.

In particular, a risk that can be expected beforehand such as a case,for example where the patient gets caught in the bed at the time of aback rise operation, would be well, the operator, however, has to alwayspay attention to the bed device to deal with risks that the operatorcannot expect. This makes especially heavy burden to the operator.

Further, the conventional bed devices have been mostly operated in ahospital or nursing home by those skilled in controlling the bed, suchas medical personnel and nursing home personnel. However, thanks torecent spread of in-home care, the bed devices have become more used athome. In such cases, the operator is a person such as a family member ofthe patient, who is not familiar with the control of the bed device.Accordingly, in order to assure safety, the operator needs to payattention to the patient and the bed device, which is a heavy burden.Moreover, it takes a longer time for the unskilled to stop the operationcompared to the case in which the skilled operates, hence posing theproblem of increased risk.

In view of the problems described above, it is therefore an object ofthe present invention to provide a bed device which not only notifiesthe danger of the bed operation but also provides higher measures thatlimit the operation of the bed, in accordance with a state of thepatient or bed device in accordance with a state of the patient or astate of the bed device.

Means for Solving the Problems

In view of the above problems, a bed device of the present inventionincludes:

an operation section that receives an operation input;

a controller that controls a movement of the bed in accordance with theoperation input;

a detector that detects a position of a patient on the bed; and,

a limitation table that stores a limitation area set on the bed inassociation with a limitation content, wherein when the position of thepatient detected by the detector is included in the limitation area, thelimitation content is read out from the limitation table so as tocontrol the controller in accordance with the limitation content.

The bed device of the present invention is characterized in that anoperation content of the bed is additionally stored in relational mannerin the limitation table, and

the limitation content is read out from the limitation table, based onthe operation input and the patient position detected by the detector.

A bed device of the present invention includes:

an operation section that receives an operation input;

a controller that controls the movement of the bed in accordance withthe operation input; and,

a limitation table that stores a bed mode for the controller to causethe bed to move so as to take a predetermined form and limitationcontents in a relational manner, wherein when the operation input isentered from the operation section, the limitation content correspondingto the operation input and the bed mode is read out from the limitationtable, and the controller is controlled based on the limitation content.

The bed device of the present invention is characterized in that the bedmode is to operate an edge-sitting mode.

The bed device of the present invention is characterized in that thelimitation content is to perform a control of suspending the movement ofthe bed.

The bed device of the present invention further includes a notifyingmeans for notifying an operator of an alert, and is characterized inthat the limitation content is to notify the operator of the alert bymeans of the notifying means.

Advantages of the Invention

According to the present invention, a bed device includes: an operationsection that receives an operation input; a controller that controls amovement of the bed in accordance with the operation input; a detectorthat detects a position of a patient on the bed; and, a limitation tablethat stores a limitation area set on the bed in association with alimitation content, and is characterized in that when the position ofthe patient detected by the detector is included in the limitation area,the limitation content is read out from the limitation table so as tocontrol the controller in accordance with the limitation content. Thatis, it is possible to readout limitation content and implement controlof the operation of the bed device appropriately, depending on theposition of the patient.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 A diagram for illustrating the overall configuration of a beddevice in the present embodiment.

FIG. 2 A diagram for illustrating the functional configuration of thebed device in the first embodiment.

FIG. 3 A diagram for illustrating the table configuration of alimitation table in the first embodiment.

FIG. 4 A diagram for illustrating limited areas in the first embodiment.

FIG. 5 An operational flow for illustrating the processing of the firstembodiment.

FIG. 6 A diagram for illustrating an operational example in the firstembodiment.

FIG. 7 A diagram for illustrating a notification example in the firstembodiment.

FIG. 8 A diagram for illustrating the table configuration a limitationtable in a second embodiment.

FIG. 9 An operational flow for illustrating the processing in the secondembodiment.

FIG. 10 A diagram for illustrating the configuration of a thirdembodiment.

FIG. 11 A diagram for illustrating the table configuration a limitationtable in the third embodiment.

FIG. 12 An operational flow for illustrating the processing in the thirdembodiment.

MODE FOR CARRYING OUT THE INVENTION

Hereinbelow, the best mode for carrying out the present invention willbe described with reference to the drawings. The following embodimentsof the present invention are mere examples, and the detecting method andother methods should not be definitely limited to the description of theembodiments.

1. The First Embodiment 1.1 Explanation of Device Profile

To begin with, the overall configuration of a bed device to which thepresent invention is applied will be described with reference to FIG. 1.FIG. 1 is a diagram for illustrating the overview of a bed device 1 inthe present embodiment. Bed device 1 is one that can implement variousoperations such as back rise, leg rise, and knee rise when the bottompart is actuated. A mattress is mounted on the bed body.

An operation section 130 for controlling the operation of the bed deviceis connected. The operator controls the operation of the bed device byoperating the operation section 130. Operation section 130 also includesa notification unit 140 for displaying the status of the bed device.

1.2 Functional Configuration

Next, the functional configuration of bed device 1 will be describedwith reference to FIG. 2. In bed device 1, connected to a controller 100are a status detector 110, a position detector 120, the operationsection 130, a notification unit 140, a bed controller 150 and a storage160, as shown in FIG. 2.

Controller 100 is a functional unit for controlling bed device 1 as awhole. Controller 100 implements diverse functions by reading andexecuting various programs stored in storage 160. Here, controller 100is formed of, for example a CPU (Central Process Unit) and the like.

Status detector 110 is a functional unit for detecting various states inbed device 1. For example, the detector detects the states by detectingthe state of the pressure sensor and detecting the operational signalsof the actuators. Herein, the states detected may include various statessuch as, for example, the back rise angle of the bed, the leg loweringangle and bed mode.

Herein, bed mode in the present embodiment represents the operationalmode of the bed. As the bed mode, various modes are prepared. Examplesinclude an edge sitting mode that is suitable for the patient to sit onthe edge of the bed device. When the edge sitting mode is selected andimplemented by the operation section, the bottom part of the bed deviceoperate to be horizontal so as to allow the patient to sit on the edgewhile the height of the bed is also adjusted. Further, when an airmattress is connected, the area where the patient sits is deflated sothat the patient can take a stable sitting position. That is, inaccordance with the selected bed mode the bed device automaticallyperforms the back rise function, the leg lowering function, adjustmentof the air mattress and the like, and achieves movement control thatenables all the necessary operations answering the user's purpose, to beimplemented by a single operation.

Position detector 120 is a functional unit for detecting the position ofthe patient on the bed device. Position detector 120 may detect the areawhere the patient stays or the center of gravity of the patient. As thedetecting method, the position of the patient may be calculated, forexample, from the measurement values of the load sensors arranged in thebed device (bed body), or the portion of the patient may be detected bymeans of a pressure sensor, or may be detected using an infrared sensoror a temperature sensor. That is, the position detector is a functionalunit for detecting where in the bed device (e.g. on the mattress) thepatient is located.

Operation section 130 is a functional unit that allows the operator tooperate bed device 1. For example, the operation section is connectedwiredly or wirelessly to the control unit of bed device 1, or isdirectly installed in the bed device. Instructions for an operation fromthe operator are input through operation buttons provided in operationsection 130. Based on the input instructions for the operation, beddevice 1 operates. As operation section 130, a publicly known input unitsuch as key input, touch panel, and voice input may and should be used.

Notification unit 140 is a functional unit that notifies the status ofbed device 1, notifies operation content and gives a warning topredetermined operations. Example of notification unit 140 may be apublicly known notification unit including a display unit such as aliquid crystal panel, a sound output unit such as a speaker. Thenotification unit may include a configuration that outputs an alarmsound (warning sound).

Bed controller 150 is a functional unit for controlling the operation ofbed device 1. For example, the bed controller is a functional unit thatperforms control of back rise operation and the like by controlling theactuators connected to bottom parts of the bed body.

Storage 160 is a functional unit that stores various programs, andvarious data, required to operate bed device 1. Storage 160 isconfigured of semiconductor memories, HDD (Hard Disk Drive) and thelike, for example.

Storage 160 also stores a limitation table 162. FIG. 3 shows one exampleof limitation table 162. As shown in FIG. 3, limitation table 162 isrecorded with a limitation area setting (e.g., “R12”), bed controlcontent (e.g., “knee rise operation”), limitation content (in thepresent embodiment, notifying operation (for example, “ON” and bedoperation (e.g., “Suspended”).

Herein, the limitation areas indicate the areas defined in the beddevice (mattress). Depending on detection of the patient in thelimitation areas, various limiting processes are implemented. Forexample, as shown in FIG. 4, predetermined areas on the bed device(mattress) are designated as the limitation areas. For example, area R12and area R14 are designated as the limitation areas.

In the present embodiment, as a method of designating limitation areas,XY coordinates may be defined on the bed device (mattress) so as todesignate the predetermined areas in the XY coordinates as thelimitation areas. Herein, it is also possible to designate limitationareas every bottom part, for example. It is also possible to set upbased on detection of a load equal to or greater than a predeterminedproportion, from the pressure sensor. That is, any methods capable ofdetecting the position of the patient can be used as the method ofdesignating limitation areas.

1.3. Process Flow

Next, the processing flow of the present embodiment will be describedusing the drawings. FIG. 5 shows a flow of the process in the presentembodiment.

To begin with, it is determined whether any bed control has been made(Step S102). If the operator has made a bed operation (Step S102; Yes),the position of the patient is detected (Step S104). The patientposition is detected by position detector 120.

Subsequently, in accordance with the patient position detected at StepS104 and the bed operation made by the operator, limitation content isread out from limitation table 162 (Step S106). At this stage, when itis determined that no limitation on bed movement is needed (Step S108;No), the ordinary bed operation is implemented.

On the other hand, when it is determined that a limitation on bedmovement is needed (Step S108; Yes), the limiting process on bedmovement is implemented. Specifically, the limitation content withrespect to the bed movement corresponding to the limitation areas andthe bed operation content is read out from limitation table 162 andjudged. First, it is determined whether or not the bed operation is“suspended” (Step S110). If the bed operation is “suspended”, theoperation of the bed is stopped temporarily (Step S110; Yes→Step S112).

Subsequently, the notifying operation is “ON” (Step S114; Yes), thenotifying process is implemented (Step S116). The notifying processindicates the process of displaying a warning on the display and/oroutputting a warning sound (alarm sound), for example.

Thereafter, it is determined whether or not the operator has confirmedthe notification (Step S118; Yes). At this stage, when the operator'sconfirmation has been detected (Step S118; Yes), the bed movement iscontinued or cancelled in accordance with the content of confirmation(Step S120).

As a result, after the operator's confirmation of the status of thepatient, it is possible to continue the operation if the risk isdetermined to be low or to cancel the operation if the risk isdetermined to be high. During this, when the operation has been set tobe suspended at Step S112, a high-risk operation is suspended, so thatit is possible to offer a safer bed device.

1.4 Operational Examples

Next, operational examples of the present embodiment will be describedwith reference to the drawings. FIG. 6 is a diagram showing a situationwhere a patient P is sitting on the edge portion in bed device 1. Sincepatient P is in the edge sitting position, the position of the patientis detected as area R12.

In this situation, if a “knee rise operation” is directed by theoperator, there is a risk that patient P as is may fall from the beddevice 1. For this reason, before implementing the leg rise operation,the bed movement is temporarily stopped (Step S112 in FIG. 5) and anotifying process is performed (Step S116 in FIG. 5).

FIG. 7( a) shows one example of a display screen W100 displayed innotification unit 140 in this state. In FIG. 7( a), a warning isdisplayed in an area R100 so as to ask the operator for confirmation ofthe movement. In this case, the operator takes measures such as shiftingthe patient' position so as to eliminate the risk of the patientfalling, the operator selects the button displayed in an area R102 inorder to continue the current bed operation.

On the other hand, when it is determined that there is a risk becausepatient P is staying in area R12, the operator selects the buttondisplayed in area R104 for cancelling the bed operation. Here, it isalso possible to produce an alarm sound in addition in order to notifythe operator distinctly.

FIG. 7( b) shows another example of a display screen W110. For example,when suspension of bed operation has not been set while only thenotifying operation has been set “ON”, the notifying process isimplemented while the bed continues to operate.

In this way, according to the present embodiment, it is possible tolimit the operation of the bed device in accordance with the position ofthe patient on the bed device and the operation content of the bed madeby the operator. For example, it is possible to suspend the movement ofthe bed device and/or implement a notifying process. As a result, it ispossible to provide a bed device with a higher safety, which can limitthe movement of the bed device in accordance with the position of thepatient.

2. The Second Embodiment

Next, the second embodiment will be described. In the first embodiment,the bed movement is limited based on the position of the patient and thecontent of the operation of the bed. In the second embodiment, the bedmovement is limited based on bed mode and content of the operation ofthe bed.

In the second embodiment, a limitation table 164 shown in FIG. 8 isstored instead of limitation table 162 described in the firstembodiment.

Limitation table 164 in FIG. 8 has stored bed mode, bed operationcontent, notifying operation and bed control in a relational manner.That is, instead of the limitation area of limitation table 162 of thefirst embodiment, the bed mode is stored.

Bed mode indicates the movement mode when the bed moves. For example,the “edge sitting mode” is a mode suitable for the patient to take theedge sitting position.

Meanwhile, the bed device of the second embodiment has the sameconfiguration as that of the bed device described in the firstembodiment with FIG. 2, the description is omitted. Here, in thediagrams of functional blocks described in the first embodiment withFIG. 2, this embodiment is also allowed not to contain position detector120.

FIG. 9 is a diagram for explaining the flow of processing in the presentembodiment. The flow of the process in the present embodiment is the onedescribed in the first embodiment with FIG. 5, in which Steps S104 toS108 are replaced by Steps S202 to S206. The other steps allotted withthe same reference numerals are the same as those in the firstembodiment, so that description is omitted.

First, when a bed operation is detected at Step S102, the current bedmode is detected (Step S202). Then, the limitation content associatedwith the detected bed mode and the operation content is read out fromlimitation table 164 (Step S204).

Here, when no limitation on bed operation is needed, the ordinary bedoperation is implemented (Step S206; No). When limitation on themovement of the bed is needed, the process from Step S110 is implemented(Step S206; Yes).

In this way, according to the second embodiment, it is possible to limitthe movement of the bed and perform the notifying process in accordancewith the operation content and the bed mode. As a result, only themovement suited to the bed mode can be implemented, thus it is possibleto provide a bed device with higher safety.

3. The Third Embodiment

Next, the third embodiment will be described. The third embodimenthandles a case where the bed function is limited based on the status ofthe bed.

3.1 Configuration

First, the bed device in the present embodiment and the conditions ofthe air mattress and others will be described with FIG. 10.

The bed device includes a mat body 10 mounted on a base 30. Herein, matbody 10 is formed of a plurality of cells 14 arranged contiguously inthe longitudinal direction. These cells are enfolded by a cover 12 of atop cover and a bottom cover, to form mat body 10.

Bed device 1 further includes a rolling portion 20. Rolling portion 20includes side cells 22 and rolling cells 24, which are used to changethe patient position.

Herein, bed device 1 is used with the patient foot side oriented in thedirection of F (to the controller 40 side) in FIG. 10 and the head sidein the direction of H in FIG. 10. Accordingly, the R-direction in FIG.10 is on the right side of the patient and the L-direction in FIG. 10 ison the left side.

Side cells 22 are formed of a side cell 22R on the right side and a sidecell 22L on the left side. Rolling cells 24 are formed of a rolling cell24R on the right side and a rolling cell 24L on the left side.

Connected to individual cells (cells 14, side cells 22, rolling cells24) are air blow tubes 42 from controller 40. An air blow tube 44 from apump unit 50 is connected to controller 40. Further, controller 40 andpump unit 50 are connected to each other by a control cable 52 so thatvarious control signals are exchanged therebetween. Connected to pumpunit 50 are a control cable 54 from without and a power cable 56 fordriving the pump.

Individual cells 14 are separated into a plurality of branch groups, thecell of each branch group being connected to a common air blow tube 42as a communication path. Air blow tube 42 is connected to a selectorvalve by way of an air blow tube connector. The selector valve isconnected to pump unit 50 byway of the air blow tube. Thus, the movementof pump unit 50 and the selector valve inflates and deflates individualcells.

Similarly to the inflating and deflating movement of these cells 14,side cells 22 and rolling cells 24 are also connected to air blow tubes42 and connected to selector valves via air blow tubes 42. The selectorvalves are connected to pump 50 via air blow tubes 44 so as to performinflation and deflation.

Here, air blow tubes 42 as the communication paths may be constructed sothat a single tube output from pump unit 50 is branched into theplurality of tubes connected to cells, or so that a plurality of tubesare output from pump unit 50. In other words, any configuration may beaccepted as long as each cell can be made to take the same pressurevalue with others in making each cell communicate with others.

Subsequently, the functional configuration of the bed device in thethird embodiment will be described. The bed device of the thirdembodiment has the same functional configuration as that of the firstembodiment shown with FIG. 2 except in that a limitation table 166 shownin FIG. 11 is stored instead of limitation table 162 described in thefirst embodiment.

Limitation table 166 in FIG. 11 stores bed status (e.g., “back riseangle>5 deg.”), bed functionality (e.g., “rolling function”) and bedlimitation content (e.g., “perform a notifying process withoutimplementation of the rolling function), in a relational manner.

The bed status includes the states of the bed device and mattress (e.g.,inflated and deflated conditions of cells 14 in the present embodiment),the state of the patient staying in bed or getting out of bed, theposition of the patient, the state of the bottom parts of the bed; amongthese the aftermentioned conditions for determination when the bedfunctionality is limited, are stored.

As the bed functionality, functions for performing various kinds ofmovements of the bed device are stored. For example, the rollingfunction is a function to change the position of the patient byinflating and deflating rolling cell 24L and rolling cell 24Ralternately.

Bed limitation content is information storing what limitation should beactually imposed on the function and movement of the bed device. Thecontent may be stored separately for each movement as in the firstembodiment or may be stored comprehensively as in this embodiment.

FIG. 12 is a diagram for explaining the process flow in the presentembodiment. To begin with, it is determined whether or not any useroperation for a bed function has been made (Step S300). When anoperation for some bed function has been made, the bed status isdetected (Step S302).

At this stage, in detecting the bed status, various items are detected.Examples of the items include the angles of the bottom parts, thepatient position, the internal pressure values of cells 14 in mattressbody 10. Based on the detected conditions of the bed and the bed statusdetected at Step S300, the limitation content is confirmed fromlimitation table 166 (Step S304).

When no limitation is needed to implement the bed function, the ordinarybed function is implemented (Step S306; No). When a limitation is neededto implement the bed function, the limitation content is read out fromlimitation table 166 (Step S308). Here, when the limitation content hasbeen already read out at Step S304, it is not necessary to implementStep S308.

Subsequently, based on the limitation content, the bed function iscontrolled (Step S310). For example, implementation of the bed functionis suspended (or cancelled) while a notifying process is implemented forthe user.

At this stage, when the operator enters confirmation (Step S312; Yes),the bed function is kept up and implemented or cancelled, based on theconfirmed content.

In the above way, according to the present embodiment, when a bedfunction is implemented, it is possible to implement or cancel the bedfunction by detecting the current status of the bed device and based onthe status of the bed device.

4. Variational Example

As the embodiment of this invention has been detailed with reference tothe drawings, the specific configuration should not be limited to thisembodiment. Designs and others that do not depart from the gist of thisinvention should also be included in the scope of claims.

Though the above embodiments were described on the assumption that theposition detection of the patient is performed at the beginning, it ispossible to detect at regular intervals of a predetermined period. Thatis, in the operation flow of FIG. 5, when it is determined that nolimitation on the bed movement is needed (Step S108; No), the ordinarybed movement is implemented while the iteration process from Step S104is implemented. As a result of this, it is possible to limit the bedmovement and/or perform a notifying process appropriately even if thepatient moves to the limited areas during the movement of the bed.

Further, in the above embodiments, though for description conveniencethe first embodiment (the second embodiment) was described on theassumption that a urethane mattress is used and the third embodiment wasdescribed on the assumption that an air mattress is used, it is ofcourse that the type of mattress is not be limited. That is, an airmattress may be used in the first embodiment (the second embodiment),whereas a urethane mattress may be used in the third embodiment.

DESCRIPTION OF REFERENCE NUMERALS

1 bed device

100 controller

110 status detector

120 position detector

130 operation section

140 notifying unit

150 bed controller

160 storage

162, 164, 166 control table

The invention claimed is:
 1. A bed device comprising: an operationsection that receives an operation input; a controller that controls amovement of the bed in accordance with the operation input; a detectorthat detects a position of a patient on the bed; and, a storage thatstores a limitation area set on the bed in association with a bedoperation content and a limitation content, wherein when the operationinput is entered from the operation section, if the position of thepatient detected by the detector is included in the limitation area and,if the operation input relates to the bed operation content associatedwith the limitation area in the storage, then the controller limits amovement of the bed with respect to the operation input in accordancewith the limitation content associated with the limitation area and thebed operation content in the storage.
 2. The bed device according toclaim 1, wherein the limitation content is to perform a control ofsuspending the movement of the bed.
 3. The bed device according to claim2, further comprising a notifying portion for notifying an operator ofan alert, wherein the limitation content is to notify the operator ofthe alert by means of the notifying portion.
 4. The bed device accordingto claim 3, wherein the alert is a display notifying that the movementof the bed is limited.
 5. The bed device according to claim 3, whereinthe alert is a display asking the operator for confirmation.
 6. The beddevice according to claim 3, wherein after the alert is checked by theoperator, the suspending of the movement of the bed is released.
 7. Thebed device according to claim 1, wherein the limitation content is toperform a control of suspending the movement of the bed.
 8. The beddevice according to claim 7, further comprising a notifying portion fornotifying an operator of an alert, wherein the limitation content is tonotify the operator of the alert by means of the notifying portion. 9.The bed device according to claim 8, wherein the alert is a displaynotifying that the movement of the bed is limited.
 10. The bed deviceaccording to claim 8, wherein the alert is a display asking the operatorfor confirmation.
 11. The bed device according to claim 8, wherein afterthe alert is checked by the operator, the suspending of the movement ofthe bed is released.
 12. The bed device according to claim 1, whereinthe limitation area is an edge portion in the bed.
 13. The bed deviceaccording to claim 1, wherein the limitation area is an edge portion inthe bed.
 14. The bed device according to claim 1, wherein the controlleris connected wirelessly to the operation section.
 15. A bed devicecomprising: an operation section that receives an operation input; acontroller that controls a movement of the bed in accordance with theoperation input; and, a storage that stores a bed mode in associationwith a bed operation content and a limitation content, the bed modecausing the controller to control the movement of the bed so that thebed takes a predetermined form, wherein when the operation input isentered from the operation section, if the bed mode is beingimplemented, and if the operation input relates to the bed operationcontent associated with the bed mode in the storage, then the controllerlimits a movement of the bed with respect to the operation input inaccordance with the limitation content associated with the bed mode andthe bed operation content in the limitation table.
 16. The bed deviceaccording to claim 15, wherein the bed mode is an edge-sitting mode. 17.The bed device according to claim 15, wherein the limitation content isto perform a control of suspending the movement of the bed.
 18. The beddevice according to claim 17, further comprising a notifying portion fornotifying an operator of an alert, wherein the limitation content is tonotify the operator of the alert by means of the notifying portion. 19.The bed device according to claim 18, wherein the alert is a displayasking the operator for confirmation.
 20. The bed device according toclaim 18, wherein the alert is a display notifying that the movement ofthe bed is limited.
 21. The bed device according to claim 18, whereinafter the alert is checked by the operator, the suspending of themovement of the bed is released.
 22. The bed device according to claim15, wherein the controller is connected wirelessly to the operationsection.